这块手表多少钱?___________ does this watch cost?
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肺活量的大小主要取决于?
A. 呼吸的频率
B. 肺部吸收氧气的能力
C. 胸腔壁的扩张与收缩的宽舒程度
D. 呼吸的节奏
你有多少张光盘?_________________ CDs do you have?
你们班有多少学生?How many __________________ are there in your class?
你家里有几口人?How many people ______________________ in your family?